Door-hanger.



F. K. FASSETR DOOR HANGER.

APPLICATION FILED Aue.12. 1912.

11,234,889 Patentd July 31, 1917.

. Patented July 31, 1917.

2 SHEETS-SHIEET 2.

. the transmission wheels attached.

FRANCIS K. FASSETT, 0F DAYTON,.OHIO.

DOOR-HANGER.

Specification of Letters Patent. P t t d July 31, 191 *7.

Application filed August 12, 1912. Serial No. 714,562.

To all whom it may concern.

Be it known that I, FRANoIs K. FASSETT, a citizen of the United States, residing at Dayton, in the county of Montgomery and State of Ohio, have invented a new and useful Improvement in Door-Hangers, of which the following is a specification.

My invention relates to hangers for two part doors of the kind known as two-third opening doors. Doors of this type are sometimes referred to as two-speed or differential. One object of the invention is to produce a carriage on which to move the door and by the resulting action of the parts so employed cause the difierential movement of its parts. Another object is to so arrange the parts that they will be capable of accommodating themselves to such imperfections and inequalities as are likely to occur in mechanism of their class. Another object is to so construct the hanger that the weight of the door is carried by parts which roll instead of rub against the parts they contact with, thereby eliminating all rubbing friction save that produced in the journals through which power is transmitted from" one part of the door to the other. Another object is to construct these journals in such manner that they will require no attention and will be subject to no injury if they receive no lubrication.

In the accompanying drawing Figure 1 is an elevation of one side of a two-part door carried by a set of my hangers. Fig. 2 is an elevation of said doors seen from the opposite side. Fig. 3 is a plan on the line 33 of Fig. 1. Fig. 4 is a full plan. F ig; 5 is an end elevation of the hanger, partly in section, attached to portions of the two parts of a door. Fig. 6 is a detail showing one of the frames with a wheel in place. Fig. 7 shows a portion of the carrier with one of Figs. 8 and 9 are a front and end elevation respectively of a modified structure. Similar numerals refer to similar parts throughout the several views.

Referring more particularly to Figs. 3 and Al, 20 and 21 are the members of a double track, said members being united by space blocks 22. Member 20is secured by suitable bolts or screws to lugs 23 projecting from the transom bar from which the door is hung. A bar 25 which I will hereinafter call the carrier has a pair of rectangular frames 26 secured to it. l/Vithin-each of said frames a grooved wheel 27 is placed, said wheels having axles 28 projecting from each side upon which the lower edges 29 of the frames rest. The wheels 27 rest and roll upon the track 20. A pair of wood links, 30 provided with suitable apertures, slip on the axles and connect the two wheels together. These links being interposed between the hubs of the wheels and the sides of the frames 26 prevent rubbing. contact between the hubs of the wheels and frames. A bracket 31 attached to the carrier extends outward and downward and attaches to one corner of the upper edge of the slow door, S. A similar bracket, 32, also attached to the carrier extends downward and supports the other corner of the door S. The bracket 31 passes on one side and the bracket 32 on the other side of track 20.

The operation of the parts so far described will be readily understood: Assuming the panel S is moved in the direction indicated by the arrow in Fig. 2 the friction of the edges 29 of the frames 26 on the axles 28 will cause wheels 27 to rotate and roll to the right on the track 20. As the frames ride upon the axles they will progress forward with reference thereto for the.

same reason that the wheels progress when they roll upon the track. Therefore as the door S moves to the right the position of the frames with reference to the wheels will gradually change and the wheels will ap-' is uniform. Therefore the only friction produced by the axles rotating in the wood links is due to the weight of the links, which is obviously very slight.

A number of bifurcated arms 40 are pivotally mounted on the carrier 25, between the limbs of which transmission wheels 41 are mounted to rotate upon axles 48. A wood bushing 48 is secured in each of the wheels and a wood washer 44 interposed between each side of the wheel and the adjacent limb of the arm. Referring to Fig. 5 it will be seen that the axle 48 has a head 45, a section 46 which passes through the carrier, a curved slot 47 being provided for the purpose, a section 48 which passes through the wood bushing, and a section 49 passing through the outer limb of the arm 40, where its end is riveted. The shoulder formed by the juncture of the sections 46 and 48 prevents the two limbs of the arm spreading, while the shoulder formed by the juncture of sections 48 and 49 prevents the limbs of the arm being drawn together tight enough to bind the wheel when the end of section 49 is riveted. The head 45 prevents the arm being pulled away from the carrier, although permitting it to oscillate freely upon its pivot to the limit of the slot 47. The carrier being supported by the track 20, the transmission wheels are in position to roll upon track 21. A rider, in the present instance formed of a piece of channel iron 50 secured to one limb of a piece of angle iron 51, rides upon the transmission wheels. Pendants 52 secured to the angle 51 have inwardly turned ends 53 which are attached to and carry the fast door, F.

Referring now to Fig. 1 it will be seen that if the panel F is moved in the direction indicated by the arrow friction between its rider and the wheels will cause the transmission wheels to rotate and roll upon the track 21. As the action of the rider with reference to the top of the wheels will be identical with the action of the bottom of the wheels with reference to the track it is obvious that the rider will progress forward with reference to the axes of the wheels at the same velocity as the axes progress with reference to the track. As the rider progresses it will overtake the wheels to the left successively and finally ride'upon the three last wheels. Since the rider progresses with reference to the axes of the wheels at the same velocity as the axes of the wheels progress with reference to the track it is clear that the carrier 25 will progress in the same direction as the panel F, but at just half its speed, and, as the carrier carries the panel S, it is obvious that the panel S will move at just half the velocity of the panel F. As each panel is hung directly below one of the tracks (see Fig. 5), there is ample room for the fast panel to pass the slow one. Panel F gradually overtakes panel S, and by the time panel S has moved a distance equal to its width, panel F having moved twice that dis tance will be directly opposite S. It is therefore seen that when the door is open it occupies a space just half the width of the opening it is designed to cover. As the action of the rider with reference to the transmission wheels, and of the transmission wheels with reference to the track, is wholly a rolling action, it follows that only rolling friction is produced by the panel F. Since when either of the panels is moved its movement transmits motion to the other panel, it is clear that this motion is transmitted through the journals of the transmission wheels upon which the rider is at the time riding, but as each panel alone moves with extraordinary ease, nothing but rolling friction being caused by its movement, it is obvious that the amount of power required to be transmitted through the journals of the transmission wheels is very slight. But, slight as it is, in order to reduce the friction at this point to the minimum, I use wood for the bushings and washers which has been impregnated with a lubricating substance; for the same reason I impregnate the links 30 with the lubricating substance.

The object of mounting the transmission wheels on the arms 40, instead of mounting them directly upon the carrier, is to 11151116 that the wheels upon which the rider rests rest upon the track. All mechanics know that it would be practically impossible to.

mount a row of wheels on a bar like the carrier 25 in such accurate alinement and produce a track so straight that all of the wheels will bear upon the track with the same pressure at all times. Moreover, asit is not customary to put a very fine quality of workmanship into apparatus of this character it becomes necessary to supply means whereby imperfections in the workmanship will not impair the operation of the mechanism. Mounting the transmission wheels so they are free to adjust themselves to irregularities in the track furnishes the required means.

In the modified construction shown in Figs. 8 and 9 a bar 60 is supported by a pair of hangers 61 which roll upon a track 62. Attached to the same bar is a number of brackets 63, each of which'has a wheel substantially like the wheels in the hangers 61 also rolling on the track 62. Practically the only difference between the hangers 61 and the brackets 63 is that in the latter the axles upon which the wheels revolve lie in vertical slots, thereby permitting the wheels to adjust themselves to inequalities in the track. They therefore do nothing toward supporting the bar (30 from which the panel S is suspended. The panel F has a rider 64 which rides in the grooves of the wheels of the hangers and brackets .63. The action of this construction will be easily understood from what has preceded. Referring to Fig. 9 it. will be noted that the track 62 is substantially central with the panel F; as the panels are supported by a single track it, is impossible to place this track in vertical alinement with the center of gravity of both panels. By placing the track in alinement with the center of gravity of the. fast door, lateral pressure in its lower guide is avoided. Owing to its relatively slow motion-lateral pressure in the lower guide of the slow door is negligible.

It will be observed that the sides of the grooves in the wheels 27 are flared, which prevents them rubbing against the side of the track 20. It will also be noticed that the flanges of the channel 50 are flared and are thereby prevented from rubbing against the sides of the wheels 4C1. These features, together with the fact that in the preferred construction each panel of the door is hung so that its center of gravity is in vertical alinement with the track upon which it runs, insures that there will be little or no friction produced by lateral thrust. The doors be ing balanced they will hang in the center of and move freely in their lower guides.

The object ofhaving bracket 31 pass on one side and bracket 32 on the other side of the track is that lugs 23 (or space blocks 22) may be closer together, thereby affording better support for the tracks than if both passed on the same side of the track. This is quite clearly shown in Fig. 3.

Various departures may be made from the structures shown and described in this application without altering the substance or exceeding the scope of the claims.

lVhat I claim is as follows:

1. A hanger for a two-part door, comprising a carrier having a plurality of rolling members adapted to roll upon a track, all of said members being attached to the carrier in such manner that they move when the carrier moves, a portion of them being attached to the carrier by independent arms which are pivotally attached to the carrier and enable the rolling members to move up and down independently of the carrier; means for attaching one part of the door to the carrier, and a rider attached to the other part of the door and riding on the rolling members. 7

2. A hanger for a two-part door, comprising a double track, a carrier, a set of rolling members operatively associated with said carrier and rolling on one of the tracks, another set of rolling members attached to the carrier and rolling on the other track; means for attaching one part of the door to the carrier, a rider attached to the other part of the'door and riding on oneset of rolling members, and means for maintaining equality of pressure between said rolling members and the rider and track with which they cooperate.

3. A hanger for a two-part door, comprising a double track, a carrier, a set of rolling, members operatively associated with said carrier and rolling on one. of the tracks, another set of rolling members attached to the carrier and rolling on the other track; the members of one set sustaining the carrier while those of the other set are capable of longitudinal movement with reference to the carrier; means for attaching one part of the door to the carrier, and a rider attached to the other part of the door and riding on the longitudinally movable rolling members.

4. A hanger for a two-part door, comprising a double track, a carrier, a set of rolling members operatively associated with said carrier and rolling on one of the tracks, another set of rolling members attached to the carrier and rolling on'the other track;

means for attaching one part of the door to the carrier so the center of gravity of said part will be in vertical alinement with one track, a rider attached to the other part of the door and riding on the rolling members which roll on the other track, and means for maintaining equality of pressure between said rolling members and the rider and track I with which they cooperate, the rider being attached in such manner that the center of gravity of the part it carries will be in vertical alinement with the track.

. 5. A hanger for a twoepart door, comprising a double track, a carrier, a set of grooved rollers mounted upon the carrier and adapted to roll upon one of the-tracks, another set of rollers, without grooves, mounted upon the carrier and adapted to roll upon the other track, one-set of the rollers being adapted to sustain the carrier; means for attaching one part of the door to the carrier, a rider secured to the other part of the door and riding upon the treads of the rollers which do not sustain the carrier, and means for 'maintaining equality of pressure between said rolling members and the rider and track with which they cooperate.

6. A hanger for a two-part door, oommembers and the rider and track with which they cooperate, and means for attaching the other panel to said rider.

7. A hanger for a two-part door, comprising a carrier, a pair of wheels rotatably mounted thereon adapted to roll upon one member of a double track and thereby sup port the carrier, and means for attaching one panel of the door to the carrier; a plurality of wheels adapted to roll upon the other member of the track, each wheel mounted upon a separate arm pivotally attached to the carrier, a rider to ride upon said wheels, and means for attaching the other panel to said rider.

8. In a hanger for a two-part differential door, an element which moves in unison with the fast panel of the door, and a stationary element, said elements being parallel toeach other; a member which moves in unison with the slow panel of the door, an arm pivotally attached to said member, and a wheel rotatably mounted on the free end of the arm, said wheel being located between said parallel elements with its periphery in contact with each.

9. A hanger for a two-part differential door, comprising a double track, two sets of rolling members, one set being arranged to roll on each track; riders attached to the door panels and resting on the rolling members, each panel being carried by one set, the action of the riders with reference to the rolling members being similar to the action of the rolling members with reference to the track; an element arranged to move in unison with one panel, and an independent con nection between said element and each rolling member supporting the other panel.

10. In combination, a door comprising two panels adapted to move at difierent speeds, an element which moves in unison with the fast panel of the door, and a stationary element, said elements being parallel to each other; a wheel located between said elements and in rolling contact with each; a member which moves in unison with the slow panel of the door, and a connection between the wheel and said member whereby they are compelled to move in unison, the portion of the connection which contacts with the wheel being composed of a substance that will produce substantially no friction when the wheel rotates in contact with it.

11. In a hanger for a two-part differential door, an element which moves in unison with the fast panel of the door, and a stationary element, said elements being parallel to each other; a wheel located between said elements and in contact with each, a member which moves in unison with the slow panel of the door, a device whereby the wheel is connected while allowed to rotate with reference to said'member, said device being composed of a substance adapted to substantially eliminate friction between the rotating wheel and'said member, and means whereby the 'wheel is permitted movement with reference to said member in a direction approximately parallel to a line drawn through its points of contact with the par allel elements,

12, In a hangerfor a two-part door, an element which moves in unison with the fast panel of the door, and a stationary element, said elements being parallel to each other; a member which moves in unison with the slow panel of the door, an arm pivotally attached to said member, a stud rigidly mounted on the free end of the arm, a sleeve mounted upon thestud, and a wheel mounted upon the sleeve, said sleeve being composed of a material adapted to prevent squeaking and injury to either the wheel or stud when the former rotates said wheel being located between the parallel elements with its periphery in contact with each.

13. A hanger for a two-part door, comprising a double track, two sets of rolling members, one set being arranged to roll on each track, ride-rs attached to the door panels and resting on the rolling members,

each panel being carried by one set, means whereby the contact of one set of rolling members with the track they rest on and the rider resting on them is made to form a frictional connection between the panels and cause them to move together, one always moving'twice as fast as the other, and means whereby the same pressure is maintained between the rolling members and tracks as is maintained between the rolling membersand riders.

14. A hanger for a two part differential door, comprising a double track, two sets of rolling members, one set rolling on each track, riders adapted to be attached to the door panels said riders resting on the rolling members, each panel to be carried by one set, the relationship of the riders to the rolling members being similar to that of the tracks to the rolling members; an element arranged to move in unison with the rider which carries one panel of the door, an independent connection between said element and each of the rolling members supporting the other panel, and means for maintaining substantial uniformity of pressure between each rolling member and the track and rider it is in contact with.

15. A hanger for a two part differential door, comprising a double track, two sets of rolling members, one set rolling on each track, riders adapted to be attached to the door panels said riders resting on the rolling members, each panel to be carried by one set, the relationship of the riders to the rolling members being similar to that of the tracks to the rolling members; an element arranged to move in unison with the rider which carries one panel of the door, and a connection between said element and each of the rolling members which carries the other panel, whereby the rolling members are made to move in unison with said element, the portion of the connection contacting with the rolling members being composed of a substance that will produce substantially no friction when the wheel ro- Witnesses:

H. H. HoDosoN, F. H. FASSETT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

